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Daniel and Kelly’s Extraordinary Universe

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Scientists Daniel and Kelly cannot stop talking about our amazing, wonderful, weird Universe! Each episode is a fun, easy-to-understand, and in-depth explanation of topics in science, from particles to black holes to moon colonies to ecosystems to parasites and everything else in the Universe!
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Scientists Daniel and Kelly cannot stop talking about our amazing, wonderful, weird Universe! Each episode is a fun, easy-to-understand, and in-depth explanation of topics in science, from particles to black holes to moon colonies to ecosystems to parasites and everything else in the Universe!
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Episodes

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Published 2025-10-02

Can we explore the galaxy with self-replicating probes?

63 min Transcript
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Daniel and Kelly talk to Phil Metzger about the engineering challenges of building self-replication space probes.

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Daniel and Kelly talk to Phil Metzger about the engineering challenges of building self-replication space probes.

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Published 2025-09-18

Does physics have to be causal and local?

71 min Transcript
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Daniel and Kelly talk to Sean Carroll about where some of the basic assumptions we make about the Universe come from, and whether we need them.

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Daniel and Kelly talk to Sean Carroll about where some of the basic assumptions we make about the Universe come from, and whether we need them.

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Published 2025-09-11

How does scientific peer review work?

56 min Transcript
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Daniel and Kelly shine a light on the inner workings of one of the crucial parts of the scientific process: peer review. How does it work? Who are these peers? Can peer-reviewed papers be wrong, and does that mean that all of science is questionable?

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Daniel and Kelly shine a light on the inner workings of one of the crucial parts of the scientific process: peer review. How does it work? Who are these peers? Can peer-reviewed papers be wrong, and does that mean that all of science is questionable?

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Published 2025-09-09

How are scientific discoveries made?

75 min Transcript
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Daniel and Kelly explore how scientific discoveries are made, digging into fun stories, the history of science with Prof. Lydia Patton and the lessons of Nobel Prize winners with Prof. Brian Keating.

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Daniel and Kelly explore how scientific discoveries are made, digging into fun stories, the history of science with Prof. Lydia Patton and the lessons of Nobel Prize winners with Prof. Brian Keating.

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Daniel and Kelly discuss the future of computing and talk to Adam Becker about what it all means.

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Daniel and Kelly discuss the future of computing and talk to Adam Becker about what it all means.

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Published 2025-09-02

Is the Universe Fine-tuned for life?

48 min Transcript
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Daniel and Kelly grapple with the implications of arbitrary numbers in our theory, whether they could have had different values, and what it all means.

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Daniel and Kelly grapple with the implications of arbitrary numbers in our theory, whether they could have had different values, and what it all means.

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Published 2025-08-26

Listener Questions #17

57 min Transcript
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Daniel and Kelly answer listener questions about screwworm at the southern border, life without the Moon, and the status of synthetic blood.

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Daniel and Kelly answer listener questions about screwworm at the southern border, life without the Moon, and the status of synthetic blood.

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Published 2025-08-21

Why do we sleep and dream? (featuring Dr. Gina Poe)

60 min Transcript
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Daniel and Kelly chat with Dr. Gina Poe about sleep and dreams - including whether mushrooms sleep, what Daniel's dog is doing in the middle of the night, and what rats dream about.

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Daniel and Kelly chat with Dr. Gina Poe about sleep and dreams - including whether mushrooms sleep, what Daniel's dog is doing in the middle of the night, and what rats dream about.

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Published 2025-08-14

Xenotransplantation

50 min Transcript
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Over 100,000 people are on the organ transplant waitlist in the United States. Unfortunately, many of these people will not get an organ in time. Daniel and Kelly talk about the science and ethics behind using transgenic pigs to fill the shortfall.

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Over 100,000 people are on the organ transplant waitlist in the United States. Unfortunately, many of these people will not get an organ in time. Daniel and Kelly talk about the science and ethics behind using transgenic pigs to fill the shortfall.

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Published 2025-08-12

Unraveling misleading popular science

51 min Transcript
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Daniel and Kelly uncover the real science behind some flashing recent popular science and talk about how to be an informed information consumer.

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Daniel and Kelly uncover the real science behind some flashing recent popular science and talk about how to be an informed information consumer.

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Published 2025-07-31

Killing the Speckled Monster: How We Eradicated Smallpox

56 min Transcript
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Daniel and Kelly appreciate that they've never had to worry about getting smallpox, and talk about the scientific and public health advancements that saved humanity from this ancient scourge.

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Daniel and Kelly appreciate that they've never had to worry about getting smallpox, and talk about the scientific and public health advancements that saved humanity from this ancient scourge.

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Daniel and Kelly explore the history of general anesthesia, and what we know (or don't know) about how it works.

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Daniel and Kelly explore the history of general anesthesia, and what we know (or don't know) about how it works.

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Published 2025-07-10

How to become a parasite

50 min Transcript
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Daniel and Kelly talk about whether or not dinosaurs had parasites, how often parasitism has popped up in the tree of life, and more. 

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Daniel and Kelly talk about whether or not dinosaurs had parasites, how often parasitism has popped up in the tree of life, and more. 

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Published 2025-07-08

Should we be worried about overpopulation or depopulation?

62 min Transcript
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Daniel and Kelly talk to the authors of "After The Spike", who argue that humanity is on a dangerous path to depopulation.

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Daniel and Kelly talk to the authors of "After The Spike", who argue that humanity is on a dangerous path to depopulation.

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Published 2025-07-01

How do we know what elements the Universe is made of?

45 min Transcript
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Daniel and Kelly trace the history of how we figured out what elements the stars are made of, featuring naked Greeks, hiking Scots, and villainous Harvard profs.

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Daniel and Kelly trace the history of how we figured out what elements the stars are made of, featuring naked Greeks, hiking Scots, and villainous Harvard profs.

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Published 2025-06-05

When will space be cheap? (featuring Zach Weinersmith)

55 min Transcript
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Daniel and Kelly chat with Zach Weinersmith about rockets and the upside and pitfalls of a potential future space economy. 

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Daniel and Kelly chat with Zach Weinersmith about rockets and the upside and pitfalls of a potential future space economy. 

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Published 2025-06-03

The Martian Revolution (featuring Mike Duncan)

55 min Transcript
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Daniel and Kelly talk to Mike Duncan, creator of The Martian Revolution, about economics, politics and revolution on Mars.

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Daniel and Kelly talk to Mike Duncan, creator of The Martian Revolution, about economics, politics and revolution on Mars.

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Published 2025-05-20

Do microbes help or hurt you? (featuring Katrine Whiteson)

70 min Transcript
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Daniel and Kelly talk to Katrine Whiteson (a Whiteson Prize laureate) about the complex relationship between humans and microbes

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Daniel and Kelly talk to Katrine Whiteson (a Whiteson Prize laureate) about the complex relationship between humans and microbes

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Published 2025-05-13

Why is mercury liquid at room temperature?

51 min Transcript
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Daniel and Kelly take a detour into the fascinating world of chemistry to explore why mercury is liquid at room temp. The answer is relatively surprising!

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Daniel and Kelly take a detour into the fascinating world of chemistry to explore why mercury is liquid at room temp. The answer is relatively surprising!

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Published 2025-05-08

How did intelligence arise?

60 min Transcript
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Daniel and Kelly answer listener questions about how we measure and define intelligence, hypotheses for why it arises, and why flies are so dumb. 

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Daniel and Kelly answer listener questions about how we measure and define intelligence, hypotheses for why it arises, and why flies are so dumb. 

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Published 2025-05-06

Can we see what's inside the electron?

54 min Transcript
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Daniel and Kelly explore the nature of of matter and whether we can crack it open without spending billions on bigger colliders

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Daniel and Kelly explore the nature of of matter and whether we can crack it open without spending billions on bigger colliders

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Published 2025-04-22

Are Humans Still Evolving? (Featuring Scott Solomon)

66 min Transcript
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Daniel and Kelly chat with Dr. Scott Solomon about how we measure evolution, and whether or not humans are still evolving. 

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Daniel and Kelly chat with Dr. Scott Solomon about how we measure evolution, and whether or not humans are still evolving. 

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Published 2025-04-17

How Does Memory Work? (Featuring Dr. Michael Yassa)

60 min Transcript
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Kelly talks to Dr. Michael Yassa about how memories are formed, comparing brains to computers, brain-computer interfaces, and more! 

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Kelly talks to Dr. Michael Yassa about how memories are formed, comparing brains to computers, brain-computer interfaces, and more! 

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